JIT

GH-128939: Refactor JIT optimize structs (GH-128940) #2554

Job	Run time
Interpreter (Debug)	7m 28s
Free-Threaded (Debug) (19)	12m 0s
i686-pc-windows-msvc/msvc (Debug)	17m 50s
i686-pc-windows-msvc/msvc (Release)	10m 49s
x86_64-pc-windows-msvc/msvc (Debug)	17m 30s
x86_64-pc-windows-msvc/msvc (Release)	11m 27s
aarch64-pc-windows-msvc/msvc (Debug)	5m 10s
aarch64-pc-windows-msvc/msvc (Release)	6m 21s
x86_64-apple-darwin/clang (Debug)	11m 44s
x86_64-apple-darwin/clang (Release)	9m 14s
aarch64-apple-darwin/clang (Debug)	9m 18s
aarch64-apple-darwin/clang (Release)	9m 22s
x86_64-unknown-linux-gnu/gcc (Debug)	8m 28s
x86_64-unknown-linux-gnu/gcc (Release)	5m 49s
aarch64-unknown-linux-gnu/gcc (Debug)	7m 57s
aarch64-unknown-linux-gnu/gcc (Release)	5m 57s
	2h 36m 24s

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